use strlcat

* addr2line.c (follow_debuglink): use strlcat instead of strncat.

* dln.c (aix_loaderror): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45191 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 3 insertions, 5 deletions

diff --git a/addr2line.c b/addr2line.c
index f936694724..92ff6b152b 100644
--- a/addr2line.c
+++ b/addr2line.c
@@ -444,10 +444,8 @@ follow_debuglink(char *debuglink, int num_traces, void **traces, char **syms,
     subdir = (char *)alloca(strlen(binary_filename) + 1);
     strcpy(subdir, binary_filename);
     strcpy(binary_filename, global_debug_dir);
-    strncat(binary_filename, subdir,
-	    PATH_MAX - strlen(binary_filename) - 1);
-    strncat(binary_filename, debuglink,
-	    PATH_MAX - strlen(binary_filename) - 1);
+    strlcat(binary_filename, subdir, PATH_MAX);
+    strlcat(binary_filename, debuglink, PATH_MAX);
 
     munmap(current_line->mapped, current_line->mapped_size);
     close(current_line->fd);
diff --git a/dln.c b/dln.c
index e6b20d54e3..a3317984e7 100644
--- a/dln.c
+++ b/dln.c
@@ -1180,7 +1180,7 @@ aix_loaderror(const char *pathname)
 {
   char *message[1024], errbuf[1024];
   int i;
-#define ERRBUF_APPEND(s) strncat(errbuf, (s), sizeof(errbuf)-strlen(errbuf)-1)
+#define ERRBUF_APPEND(s) strlcat(errbuf, (s), sizeof(errbuf))
   snprintf(errbuf, sizeof(errbuf), "load failed - %s. ", pathname);
 
   if (loadquery(L_GETMESSAGES, &message[0], sizeof(message)) != -1) {